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Green rectangular circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 64GB DDR4 2933 PC4-23400 CL21 2Rx4 1.2V 288-Pin ECC RDIMM ASRock EPYC memory upgrade

SKU CH-SD3P-X1JSX

64 GB DDR4 2933 ECC registered RDIMM for ASRock EPYC server motherboards

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 64GB

  • 64 GB capacity supports demanding server workloads
  • DDR4 2933 speed delivers high bandwidth for EPYC platforms
  • ECC registered design protects data integrity in critical systems
  • 2 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits compatible ASRock server boards

ASRock EPYC 64GB DDR4 RDIMM

This registered ECC module is built for ASRock Rack ROMED8-2T motherboards running AMD EPYC processors. It targets server and workstation builders who need validated, single-stick capacity upgrades for mission-critical workloads. The DDR4 2933 speed and 1.20V operation match the platform's native memory controller specifications.

Registered ECC with 2Rx4 organisation

The module uses a 2Rx4 rank configuration and registered buffering to reduce electrical load on the memory bus. This allows the motherboard to populate more slots reliably at the rated 2933 MT/s data rate. CL21 latency and PC4-23400 bandwidth are the decisive figures for compatibility with the target EPYC platform.

64GB single-module capacity

One 288-pin DIMM delivers 64GB, letting you scale total system memory in large increments without consuming extra slots. It handles virtualisation hosts, database buffers and large dataset caching comfortably. Workloads that exceed per-channel rank limits or require higher frequencies than 2933 MT/s will need a different module class.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $380.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $5.95 per GB
Cheaper than about 66% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 2933 MHz ECC RDIMM Registered Server Memory
Part numberMR23400-924K1
Total capacity64 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items64 GB (1 × 64 GB) DDR4 2933 MHz PC4-23400 2Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory

Other versions of this model

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Questions about this item

What does the DDR4-2933 CL21 rating mean once the module is installed in a server?

The module operates at 2933 MT/s with a CAS latency of 21 cycles, providing registered ECC DDR4 bandwidth for the ASRock EPYC platform.

How does the PC4-23400 designation limit real-world throughput?

PC4-23400 specifies a peak transfer rate of 23400 MB/s; actual throughput depends on the motherboard memory controller and populated DIMM slots.

What physical requirements must the chassis and motherboard meet for this 288-pin RDIMM?

It requires a standard 288-pin DDR4 RDIMM socket with 1.2 V support and enough vertical clearance for a module without a heat spreader.

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